<div class="jumbotron">
  <h1 class="display-3">头号试玩</h1>
  <p class="lead">你的零钱取款机</p>
  <hr class="my-4">
  <p>后台管理系统</p>
  <p class="lead">
    <a class="btn btn-primary btn-lg" href="#" role="button">干杯</a>
  </p>
</div>